22646644512 has 48 divisors (see below), whose sum is σ = 59484976992. Its totient is φ = 7544115200.

The previous prime is 22646644507. The next prime is 22646644543. The reversal of 22646644512 is 21544664622.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80023 + ... + 227369.

It is an arithmetic number, because the mean of its divisors is an integer number (1239270354).

Almost surely, 2^22646644512 is an apocalyptic number.

It is an amenable number.

22646644512 is an abundant number, since it is smaller than the sum of its proper divisors (36838332480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22646644512 is a wasteful number, since it uses less digits than its factorization.

22646644512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148961 (or 148953 counting only the distinct ones).

The product of its digits is 552960, while the sum is 42.

The spelling of 22646644512 in words is "twenty-two billion, six hundred forty-six million, six hundred forty-four thousand, five hundred twelve".